S & W Race cars Lemons cage install. (Page 1 of 2)

Your harness bar is too low if that seat is mounted properly..

Remember to go with your tallest driver in the seat, measure from their shoulder, the belt holes might be located wrong. In that case you might have to relocate the holes. John made me aware of this also.

If you haven't finish-welded the a-pillar bars, here's a tip. The closer that you can get those downbars to the a-pillar the better. Then you can go back later and weld a piece of plate to the downbars and to the a-pillar, which will stiffen up the car a good bit. It's how all the big boys do their a-pillar bars in sports car racing.

I'm not sure I'd want to anchor the shoulder belts that far back. Nylon is actually pretty stretchy stuff, and the longer the nylon web, the more it can stretch for a given force. The more the belt stretches, the more likely you'll hit something inside the car.

Diagonal can still be 2-piece, but the fabrication has to be that much better to ensure it's a straight run end to end.

I'd want a definite go/no-go on the distance from the upper end of that diagonal to the 'corner' of the hoop (refer second pic in orig. post).

Diagonal is prefered to be 1 piece, but this is an acceptable method. I would have liked to see the diagonal closer to the corner.
As for the harness bar, it is too far from the seat. you are better off cutting it to fit between the main hoop and the diagonal at the bottom of the seat harness hole.

Thanks, i really appreciate everyones input,  the diagonal was moved to the right a little so there would be no helmet interference issues, the engineer at S & W suggested it.  moving the harness bar back to the main hoop is definitely a possibility, its simply pressure fit right now. I'll put it wherever Jon or the tech guys tell me too!

I thought i had seen harnesses mounted like that in wrc rally cars, which i assumed were fia spec which i assumed would fly

I also suggest cutting out the rearmounted harness bar, then cut that piece down so it just fits within the main hoop, and mount it 1-2" above the current cross bar.  (make sure you allow enough space to get a full weld around the new tube).

Then you will have an "adjustable" shoulder harness mounting height.  Wrap it on the bottom bar for a short driver in a short seat, wrap on the top bar for a tall driver in a higher mounted seat.

Our main horizontal bar was too low as designed so we just welded in a separate harness bar higher to make the attachment for the shoulder belt angle correct. 

Thanks John, Just to be clear is mounting a short piece of tube between the main hoop and the diagonal above the portion that is to low (like team magnum pu)  acceptable?

After changing seat mounts, it was easier to just put in a bar higher and leave the old one in too.  This way, if we go back to the lower seat mount, we'll be covered.

Also, how is it you refer to yourself as "average idiots"?  I hear you're exceptional idiots.